(19)

(11)

EP 3 902 602 A1

(12)

(43) Date of publication: 03.11.2021 Bulletin 2021/44 (21) Application number: 19839469.4 (22) Date of filing: 16.12.2019

(51) International Patent Classification (IPC):  A61N 5/10(2006.01) (52) Cooperative Patent Classification (CPC): A61N 5/1045 (86) International application number: PCT/US2019/066430 (87) International publication number: WO 2020/139590 (02.07.2020 Gazette 2020/27)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 28.12.2018 US 201816236112 (71) Applicants: Varian Medical Systems, Inc. Palo Alto, CA 94304 (US) Varian Medical Systems International AG 6312 Steinhausen (CH)

(72) Inventors: RIEGER, Rachel Escondido (US) KAUPPINEN, Juha Espoo (FI) MAGLIARI, Anthony Newark, IL (US) BAIC, Dusan Santa Clara (US) (74) Representative: Foster, Mark Charles  Mathisen & Macara LLP Communications House South Street Staines-upon-Thames, Middlesex TW18 4PR Staines-upon-Thames, Middlesex TW18 4PR (GB)